“Terra Nova” co-creator Kelly Marcel will write the screenplay for the film adaptation of “Fifty Shades of Grey” by author E.L. James.

James tweeted the news and the “Fifty Shades” Facebook page also posted it.

Hi guys, I’m thrilled to announce we have a screenwriter for Fifty Shades of Grey. Details here: Walt Disney 's struggle to secure the film rights to the P.L. Travers book “Mary Poppins.” The film is in production at Walt Disney Studios and stars Emma Thompson, Colin Farrell and Tom Hanks.

Michael De Luca, Dana Brunetti and Jameswill produce the “50 Shades” film for Focus Features and Universal Pictures.

“Kelly’s work demonstrates her flawless structural technique and passionate commitment to emotion, humor and depth of character which is particularly visible in the celebrated screenplay for the upcoming ‘Saving Mr. Banks,’” De Luca said in the Facebook post.

Focus and Universal secured the rights to the “Fifty Shades” trilogy in March for $5 million in a Hollywood bidding war.

The “Fifty Shades” books follow Anastasia Steele, a college student, and her sadomasochistic relationship with Seattle billionaire Christian Grey. The trilogy has been translated into 45 languages and has sold over 32 million copies in the U.S.

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